| Trademark Evolution Happens t-shirt with Evolution Happens logo on the front of this deep chocolate brown t-shirt, and a simplified cladogram on the back with skull images of Pan troglodytes (common Chimpanzee), Australopithecus afarensis (Lucy's species), and Homo sapiens (modern human), all from our Hammon Todd Collection. Imprinted in a rich purple, on a brown long sleeve cotton T-shirt. For the new generation of science minded fashionistas, order one for your friends. |